OCAGNE, SEVEN WORKS ON NOMOGRAMS, 1885-1920

i. Abaque en points isoplèthes de l'équation de Képler. Paris: Gauthier-Villars for the Société mathématique de France, [1894] [offprint from:] Bulletin de la Société mathématique de France, vol. 22, 1894, authorial presentation copy with stamped signature ("Hommage de l'Auteur"), original printed paper wrappers, uncut, (Weinreb Collection, Bloomsbury, 28 October 1999, lot 84, Erwin Tomash), [T&W O1], wrappers split and tornii. Abaque general de la trigonométrie sphérique. Paris: Gauthier-Villars, 1894 [offprint from:] Bulletin astonomique, authorial presentation copy with stamped signature ("Hommage de l'Auteur"), original printed paper wrappers, uncut, wrappers split [T&W O2] iii. Coordonnées parallèles et axiales. Paris: Gauthier-Villars, 1885, folding plate, original printed paper wrappers, (bought from Simon Finch, London, 2000), [T&W O8], wrappers lightly soiled and chipped iv. Le Calcul simplifié par les procédés mécaniques et graphiques. Paris: Gauthier-Villars, 1894, 2 folding plates, numerous vignettes, cloth backed marbled boards, library stamps and markings. (bought from Hugues de Latude, Paris, 1997), [T&W O15 bis]v. Another edition. Paris: Gauthier-Villars, 1905, second edition, substantially expanded, vignettes, original cloth, (bought from Bernard Maille, Paris, 1992), [T&W O16; Origins of Cyberspace 346; Randell 1979 p.125]. upper hinge splitting vi. Nomographie. Les calculs usuels effectués au moyen des abaques. Paris: Gauthier-Villars, 1891, 8 plates, errata slip, ownership inscription ("E. de Loisy"), roan backed marbled boards, (bought from Bernard Quaritch, London, 1985), [T&W O21; Origins of Cyberspace 344]vii. Principes usuels de nomographie. Paris: Gauthier-Villars, 1920, numerous illustrations, original printed papers wrappers in modern paper wrappers, boxed, (bought from F.E. Whitehart, London, 1985), [T&W O23], wrappers marked 8vo (7)

Condition is described in the main body of the catalogue, where appropriate.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Ocagne invented nomograms in 1884. These are diagrams using a parallel coordinate system that allow the approximate graphical computation of a mathematical function. They allow for quick and accurate computations and were widely used until the development of the pocket calculator.